function NewWindow(mypage,myname,w,h){
	LeftPosition=(screen.width)?(screen.width-w)/2:100;
	TopPosition=(screen.height)?(screen.height-h)/2:100;
	settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars=no,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
	win=window.open(mypage,myname,settings);
	if(win.focus){win.focus();}
}

function lanzarJuego() {
    NewWindow("http://www.indigo.es/juegof1/juego2010.htm", "juego", 781, 600);
}